May 07, 1904

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Features

Commemoration of the Louisiana Purchase

Some Interesting Facts about the Development of the Edison Storage Battery

Battleship or Torpedo Boat

The Current Supplement

Action of Radium on Metals

Experiments with Three-Phase Electric Arcs

The Russian Ice-Breaker "Ermack"

High-Velocity 6-Inch Wire-Wound Gun for the United States Army

Growth of Our Navy

The Louisiana Purchase Exposition--Its Scope and its Purpose

By Samuel Williams

The Largest Clock in the World

By Claude H. Wetmore

A New Electric Clock

Patent Department

The Hydraulic Letter Press

Strainer for Locomotives

A Combined Third-Rail Contact Shoe and Sleet Remover

A New Wrench

A Novel Mail-Bag Catcher

Business and Personal Wants

Departments

Departments

The Heavens in May - May 7, 1904

Recently Patented Inventions - May 7, 1904

Notes and Queries - May 7, 1904

New Books, Etc. - May 7, 1904

Index of Inventions - May 7, 1904

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Digital Issue ?Read or download this issue’s articles online. *A printed copy of this issue is not included. $7.99

Print + Digital All Access Subscription ?Read or download this issue’s articles online. Plus, subscribe to get Print, Online and Tablet access to the next 12 new issues to be released as well as Online access to archives back to 1845. $99.00

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